It's been quite sweet watching these two get to know each other. When Wylla was tiny, she had more of a mother/daughter relationship with Charlene. Now, they are sisters.
There's lots of love there, good times spent together, a little annoyance and irritation from both parties, an occasional raised paw, much sweetness and great sensitivity. When Wylla's having a bad day and not feel well, you can see it causes Bean stress. When Bean's kind of grumpy and needs a good nap, Wylla naps near her, but not TOO near.
Their relationship is complex, close, and lovely to witness. I'm grateful they have each other, and I know they feel the same.